Add a "Write to your MP" button to your site's share row — next to your X / Facebook / WhatsApp buttons.
When a reader taps it, it shares the article they're on to WriteToPower and opens a letter that cites it.
The widget captures the page automatically; the plain link takes a
url= you fill per article.
1. What should the button link to?
2. Preview
3. Copy the embed
Button widget (auto-captures the page it's on):
…or a plain link:
The link uses a stable format
(?campaign_id=&topic_code=&reference_url=&src=) that keeps working
if WriteToPower moves to its own site — only the address changes.